0161 494 5285
07875 464214
tiedry@hotmail.com
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Removal of Cavity Wall Insulation
What were cavity walls designed for?
To stop penetrating damp caused by wind driven rain being soaked into the external wall and eventually into the internal wall.
This is especially true in areas in the North West due to prevailing weather conditions in this part of the country.

If the outside walls are continually exposed to wet weather conditions, especially when driven by a strong wind, cavity wall insulation is not suitable. This is because exposed walls may never experience enough dry conditions for the walls to dry out and the moisture build up will eventually affect the insulation inside the cavity.

Many people who have had their homes insulated are facing damp problems, sometimes it’s condensation issues but mostly are the cavity wall insulation holding water.
Extraction of Cavity Wall Insulation

We can extract defective cavity wall insulation by using specialist tools and equipment. The insulation is removed through the exterior walls therefore causing minimal disturbance to the fabric of the building and its occupants. It is possible to extract Rockwool, White wool, and bead insulation products from the cavity walls of domestic and commercial properties and we work across the North West.

Why remove Cavity Wall Insulation?

If Cavity Wall Insulation has not been correctly installed, it can 'slump' over time in the cavity causing some areas to be insulated whilst others are not. This difference can lead to cold spots in a property which in turn can lead to condensation forming on some areas of the internal walls. No amount of 'damp proofing' remedies can rectify this problem - the only solution is to remove the insulation from the cavities.

The cavity insulation gets wet, which breaks down the properties of the insulation. This can happen due to a number of reasons such as flooding, porous brickwork or mortar, or through a burst pipe in the attic. 
The location of some properties make them unsuitable for Cavity Wall Insulation, for example if they have walls that are exposed to frequent driving rain; unfortunately wet weather conditions are common the the North West.

Once wet, the insulation cannot 'dry out' as it is contained in the cavity. It will then draw heat out of the property - a bit like wearing a wet jumper would take the heat away from a person's body.

How is CWI Removed/Extracted?

The redundant cavity wall insulation is removed using a specialist industrial vacuum machine together with a compressor which will blow and agitate the insulation towards the extraction points. 

The waste material is bagged during the extraction and removed from site at the end of the job.

This extraction process will take 2-3 days to complete in an average three-bedroom detached property.
To discuss the removal of your Cavity Wall Insulation call Tie Dry on:
0161 494 5285
07875 464214
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